Cooler bag



FIG. 1 is a front view of the cooler bag;

FIG. 2 is a rear view of the cooler bag;

FIG. 3 is a left side view of the cooler bag, the right side being a mirror image;

FIG. 4 is a top view of the cooler bag; and,

FIG. 5 is a bottom view of the cooler bag. 

The ornamental design for a cooler bag, as shown and described. 